
30/07/2025
As promised, we’re continuing our discussion with a closer look at the histopathological features of our Proliferative Verrucous Leukoplakia (PVL) case.
(Missed the first part? Catch up here to follow the full case) https://www.facebook.com/share/p/18mbBpqwu9/?mibextid=wwXIfr
According to the WHO 2022 classification, grading dysplasia in papillary and verrucous lesions can be particularly challenging, as architectural abnormalities often predominate, while cytological atypia may be minimal or even absent.
In this case, the epithelium exhibited classic structural alterations consistent with a high risk lesion: papillary and verrucous surface architecture, basal cell clustering, irregular stratification, and reduced keratinocyte cohesion. Additional findings included keratin pearls within rete processes and expanded proliferative compartments, all of which reflect disordered epithelial maturation.
Despite limited cytological atypia, the extent and severity of the architectural alterations justified a diagnosis of moderate epithelial dysplasia in our evaluation, consistent with the WHO 2022 criteria.
Such patterns may represent early transformation and carry significant malignant potential, underscoring the importance of recognizing structure-led dysplasia in lesions like PVL.